<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
  <title>Graph 3D demo</title>

  <style>
    html, body {
      font: 10pt arial;
      padding: 0;
      margin: 0;
      width: 100%;
      height: 100%;
    }

    #mygraph {
      position: absolute;
      width: 100%;
      height: 100%;
    }
  </style>

  <!-- for mobile devices like android and iphone -->
  <meta name="viewport" content="target-densitydpi=device-dpi, width=device-width" />

  <script type="text/javascript" src="../../dist/vis.js"></script>

  <script type="text/javascript">
    var data = null;
    var graph = null;

    function custom(x, y) {
      return (Math.sin(x/50) * Math.cos(y/50) * 50 + 50);
    }

    // Called when the Visualization API is loaded.
    function drawVisualization() {
      // Create and populate a data table.
      data = new vis.DataSet();

      // create some nice looking data with sin/cos
      var steps = 10;  // number of datapoints will be steps*steps
      var axisMax = 314;
      var axisStep = axisMax / steps;
      for (var x = 0; x < axisMax; x+=axisStep) {
        for (var y = 0; y < axisMax; y+=axisStep) {
          var value = custom(x,y);
          data.add([
            {x:x,y:y,z:value}
          ]);
        }
      }

      // specify options
      var options = {
        width:  '100%',
        height: '100%',
        style: 'surface',
        showPerspective: true,
        showGrid: true,
        showShadow: false,
        keepAspectRatio: true,
        verticalRatio: 0.5,
        backgroundColor: {
          strokeWidth: 0
        }
      };

      // create our graph
      var container = document.getElementById('mygraph');
      graph = new vis.Graph3d(container, data, options);
    }
  </script>
  
</head>

<body onresize="graph.redraw();" onload="drawVisualization()">
<div id="mygraph"></div>
</body>
</html>
